Depends on your Institution's Research Ethics policies. Usually its 5 years maximum.

maximum 5 years

I would put it in an archive in a fully documented form. I see no need for a time limit. For example:

https://www.data-archive.ac.uk/deposit/

and for qualitative

https://www.data-archive.ac.uk/managing-data/standards-and-procedures/persistent-identifiers/qualitative-data/